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rfkill: add function to query state

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Sometimes it is necessary to know how the state is,
and it is easier to query rfkill than keep track of
it somewhere else, so add a function for that. This
could later be expanded to return hard/soft block,
but so far that isn't necessary.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-06-02 13:01:40 +02:00 committed by John W. Linville
parent 7643a2c3fc
commit 6081162e2e
2 changed files with 25 additions and 0 deletions
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12
include/linux/rfkill.h
View File

@ -261,6 +261,13 @@ void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw);
* registered drivers?
*/
void rfkill_set_global_sw_state(const enum rfkill_type type, bool blocked);
/**
* rfkill_blocked - query rfkill block
*
* @rfkill: rfkill struct to query
*/
bool rfkill_blocked(struct rfkill *rfkill);
#else /* !RFKILL */
static inline struct rfkill * __must_check
rfkill_alloc(const char *name,
@ -313,6 +320,11 @@ static inline void rfkill_set_global_sw_state(const enum rfkill_type type,
bool blocked)
{
}
static inline bool rfkill_blocked(struct rfkill *rfkill)
{
return false;
}
#endif /* RFKILL || RFKILL_MODULE */

13
net/rfkill/core.c
View File

@ -773,6 +773,19 @@ static struct class rfkill_class = {
.resume = rfkill_resume,
};
bool rfkill_blocked(struct rfkill *rfkill)
{
unsigned long flags;
u32 state;
spin_lock_irqsave(&rfkill->lock, flags);
state = rfkill->state;
spin_unlock_irqrestore(&rfkill->lock, flags);
return !!(state & RFKILL_BLOCK_ANY);
}
EXPORT_SYMBOL(rfkill_blocked);
struct rfkill * __must_check rfkill_alloc(const char *name,
struct device *parent,